27 Eylül 2008 Cumartesi

İPHONE

GPRS

3G technology gives iPhone fast access to the Internet and email over cellular networks around the world. iPhone 3G also makes it possible to do more in more places: Surf the web, download email, get directions, and watch video — even while you’re on a call.

How it works.

iPhone 3G uses a technology protocol called HSDPA (High-Speed Downlink Packet Access) to download data fast over UMTS (Universal Mobile Telecommunications System) networks. Email attachments and web pages load twice as fast on 3G networks as on 2G EDGE networks.1 And since iPhone 3G seamlessly switches between EDGE, faster 3G, and even faster Wi-Fi, you always get the best speeds possible.

Talk and browse. At the same time.

iPhone already gives you mobile multitasking. But 3G technology lets you multitask in more places — without connecting via Wi-Fi. Since 3G networks enable simultaneous data and voice, you can talk on the phone while surfing the web, checking email, or using Maps. All from your 3G cellular network.

Go anywhere.

iPhone 3G meets worldwide standards for cellular communications, so you can make calls and surf the web from practically anywhere on the planet. And if you’re in an area without a 3G network, iPhone connects you via GSM for calls and EDGE for data.

More wireless. Less space.

iPhone 3G delivers UMTS, HSDPA, GSM, Wi-Fi, EDGE, GPS

, and Bluetooth 2.0 + EDR in one compact device — using only two antennas. Clever iPhone engineering integrates those antennas into a few unexpected places: the metal ring around the camera, the audio jack, the metal screen bezel, and the iPhone circuitry itself. And intelligent iPhone power management technology gives you up to 5 hours of talk time over 3G networks.2 That’s some of the best in the business.

GPRS

GPS technology and iPhone software come together to create a new dimension in mobile phone mapping. Get a fast fix on your location. Track your progress as you go. Use applications that take advantage of GPS navigation features. All from iPhone 3G.
How it works.

GPS (Global Positioning System) technology uses information from earth-orbiting satellites to find locations. A receiver estimates the distance to GPS satellites based on the time it takes for signals to reach it, then uses that information to identify its location. But the A-GPS (Assisted GPS) solution on iPhone 3G goes a step further, using a unique approach to find the closest satellites and more quickly identify your position. That gives you a faster fix on your location than with regular GPS.

Get the signal.

In addition to A-GPS, iPhone 3G uses signals from GPS satellites, Wi-Fi hot spots, and cellular towers to get the most accurate location fast. If GPS is available, iPhone displays a blue GPS indicator. But if you’re inside — without a clear line of sight to a GPS satellite — iPhone finds you via Wi-Fi. If you’re not in range of a Wi-Fi hot spot, iPhone finds you using cellular towers. And the size of a location circle tells you how accurately iPhone is able to calculate that location: The smaller the circle, the more accurate the location.


Accelerometer

iPhone responds to motion using a built-in accelerometer. When you rotate iPhone from portrait to landscape, the accelerometer detects the movement and changes the display accordingly. So you immediately see the entire width of a web page, view a photo in its proper aspect ratio, or control a game using only your movements.

How it works.

The accelerometer inside iPhone uses three elements: a silicon mass, a set of silicon springs, and an electrical current. The silicon springs measure the position of the silicon mass using the electrical current. Rotating iPhone causes a fluctuation in the electrical current passing through the silicon springs. The accelerometer registers these fluctuations and tells iPhone to adjust the display accordingly..


Keyboard

The intelligent, software-based iPhone keyboard does more than a physical keyboard ever could. It’s there only when you need it, it adapts to any application, and it changes its keys to support typing in 21 languages. All you do is tap.

Click to play Keyboard features video

See the keyboard
in action.

Watch the demo

Keyboard: See it in action

Making a call on iPhone
Contacts on iPhone Contacts on iPhone

Type fast.

iPhone features a full QWERTY keyboard and gives you keys for every number and symbol with just a few taps. It speeds up typing by suggesting common contractions such as “can’t,” “don’t,” or “let’s.” And it lets you insert special characters and accents quickly: Just touch and hold a letter to see all of its possible forms. Slide your finger to the right one, and you’re done.

How it works.

While the keyboards on other mobile phones stay fixed in place, the iPhone keyboard adapts its keys and layout for different applications. With iPhone, you get exactly the right keyboard for the task at hand. And the iPhone keyboard appears when you need it and disappears when you don’t — giving you more room to view websites, email, maps, and video.

Contacts on iPhone

Type accurately.

iPhone analyzes keystrokes to suggest words as you type. It does this by employing complex mathematics to track the pattern of letters you type and match them to the pattern of other common words. iPhone uses a complete English dictionary to correct text, and it learns the words you type most often — including proper names and information from your contacts list.

Type (or write) in your language.

The iPhone keyboard’s intelligent design allows you to switch between 21 international layouts with a single tap. iPhone also features sophisticated character recognition software that lets you draw a Chinese character with your finger and tap to choose the matching result.

Contacts on iPhone

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